The scope of orthodontic treatment mainly includes the following categories: 1. The early treatment of malocclusion mostly begins in the middle and late dentition, including the early treatment of dentition and skeletal malocclusion. 2. The comprehensive treatment of malocclusion generally starts from the stage of permanent dentition, and the classic edgewise arch technique emphasizes the treatment after the eruption of the second permanent molar. Divided into two categories, one is the comprehensive treatment of malocclusion, and the other is the cover-up correction of skeletal malocclusion. 3. Adult orthodontic patients have passed the period of rapid growth and development of youth, and most of them begin after 18 years old. It includes three parts: ① comprehensive orthodontic treatment of tooth malocclusion and mild to moderate skeletal malocclusion; ② Orthodontic-surgical treatment of moderate and severe malocclusion; ③ Combined orthodontic treatment is necessary for tooth movement, which provides convenience for other oral treatments, controls dental diseases and restores functions. 4. Multidisciplinary treatment of some oral diseases, such as temporomandibular joint disorder syndrome, periodontal disease, cleft lip and palate deformity, etc. Orthodontic treatment is a method or step of continuous treatment. In recent years, the orthodontic treatment of obstructive sleep apnea syndrome has become a research hotspot. Through the introduction of the above information, I believe you already know something about it. Nanjing Huamei Medical Beauty Hospital has gathered a large number of skilled and experienced experts, which are well received by the majority of patients!